/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { Pipe, PipeTransform } from '@angular/core';
import { Store } from '@ngrx/store';
import { AppStore } from '@app/classes/models/store';
import { Observable } from 'rxjs/Observable';

import { selectDisplayShortHostNames } from '@app/store/selectors/user-settings.selectors';

@Pipe({
  name: 'hostName'
})
export class HostNamePipe implements PipeTransform {

  constructor(private store: Store<AppStore>) {
  }

  transform(hostName: string): Observable<string> {
    return this.store.select(selectDisplayShortHostNames).map((displayShortHostNames: boolean): string => (
      displayShortHostNames ? hostName.split('.')[0] : hostName
    ));
  }

}